PartsTable
Technical Data Sheet
321568 ✓ Verified by PartsTable
· GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The RETAINER,DISK,VALVE is a the manufacturer industrial component. Key specifications include hole_diameter: 0.679 INCHES MINIMUM AND 0.694 INCHES MAXIMUM IN, hardness_rating: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM, outside_diameter: 0.938 INCHES MINIMUM AND 0.953 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN, external_key_quantity: 11. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-329-2093, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
321568
NSN: 4820-01-329-2093
FSC: 4820
CAGE: 79318 — MEGGITT NORTH HOLLYWOOD INC (USA)
SPECIFICATIONS
materialSTEEL COMP 1115 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OVERALL
hole_diameter0.679 INCHES MINIMUM AND 0.694 INCHES MAXIMUM IN
hardness_rating50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
outside_diameter0.938 INCHES MINIMUM AND 0.953 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
external_key_quantity11
external_prebent_key_width0.108 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
internal_prebent_key_width0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
internal_prebent_key_length0.063 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
departure_from_cited_designatorAS MODIFIED BY INTERNAL PREBENT KEY LENGTH AND INTERNAL PREBENT KEY WIDTH
overall_distance_including_keys1.328 INCHES MAXIMUM IN
NSN4820-01-329-2093
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS SIZE: — · — · — PN: 321568 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
D8708PC33Interchangeable
interchangeable cross-reference
interchangeable
D8960PC36Interchangeable
interchangeable cross-reference
interchangeable
D8527PC33Interchangeable
interchangeable cross-reference
interchangeable
E71SBInterchangeable
interchangeable cross-reference
interchangeable
YAV6CLInterchangeable
interchangeable cross-reference
interchangeable
411177-9Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 321568?
321568 is a RETAINER,DISK,VALVE.
What parts can replace 321568?
There are 6 known substitutes for 321568: D8708PC33, D8960PC36, D8527PC33 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 321568?
321568 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-329-2093. This indicates validated use in U.S. government and defense supply chains.
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